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2. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   A microphone captures the targeted ambient sounds, and a small amplifier generates sound waves that are exactly out of phase with the undesired sounds. When the sound pressure of the noise wave is high, the cancelling wave is low (and vice versa). The opposite sound waves collide and are eliminated or "cancelled" (destructive interference ...

3. List of Bose headphones - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_headphones

   A20 Aviation Headset. The "A20 Aviation Headset" was released in 2010 as the successor to the "Aviation Headset X" (aka A10). [39][40] It has a claimed battery life of 45 hours (using two AA batteries) or can be powered by the airplane's electrical system. There are two versions, one with Bluetooth and one without.

4. Wireless microphone - Wikipedia

   en.wikipedia.org/wiki/Wireless_microphone

   Singer Cody Simpson using a wireless microphone headset in a 2013 concert in Montreal. A wireless microphone, or cordless microphone, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated. Also known as a radio microphone, it has a small, battery-powered radio ...

5. Take 20% Off Raycon Earbuds, Headphones and Speakers ... - AOL

   www.aol.com/entertainment/20-off-raycon-earbuds...

   These Basic Earbuds. The Work Earbuds Classic. Raycon. For everyday wear that’s easy to take in and out, these buds are the perfect pick! See it! Get The Work Earbuds Classic (originally $120 ...

6. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby ...

7. Audio headset - Wikipedia

   en.wikipedia.org/wiki/Audio_headset

   Headsets are available in single-earpiece and double-earpiece designs. Double-earpiece headsets may support stereo sound or use the same monaural audio channel for both ears. Single-earpiece headsets free up one ear, allowing better awareness of surroundings. Telephone headsets are monaural, even for double-earpiece designs, because telephone ...